"The long-term baseline temperature is about three tens of a degree (C) warmer than it was when the big El Niño of 1997-1998 began, and that event set the one-month record with an average global temperature that was 0.66 C (almost 1.2 degrees F) warmer than normal in April 1998."

"With the baseline so much warmer, this upcoming El Niño won't have very far to go to break that 0.66 C record," Christy said. "That isn't to say it will, but even an average-sized warming event will have a chance to get close to that level.""

The immediately above quote was replaced since I gave the same quote twice. Both are in the link above. Bad “paste" job.

The 0.66C record anomaly ("T Departure from the 1098-2010 avg” on their plot) is the highest of their (UAH’s) reduction of the satellite data.